Index: wp-includes/pluggable.php
===================================================================
--- wp-includes/pluggable.php	(revision 20995)
+++ wp-includes/pluggable.php	(working copy)
@@ -1528,7 +1528,7 @@
 			set_transient('random_seed', $seed);
 	}
 
-	// Take the first 8 digits for our value
+	// Take the first 8 characters for our value
 	$value = substr($rnd_value, 0, 8);
 
 	// Strip the first eight, leaving the remainder for the next call to wp_rand().
Index: wp-includes/class-wp-customize-manager.php
===================================================================
--- wp-includes/class-wp-customize-manager.php	(revision 20995)
+++ wp-includes/class-wp-customize-manager.php	(working copy)
@@ -916,7 +916,7 @@
 /**
  * Validates a hex color.
  *
- * Returns either '', a 3 or 6 digit hex color (with #), or null.
+ * Returns either '', a 3 or 6 character hex color (with #), or null.
  * For validating values without a #, see sanitize_hex_color_no_hash().
  *
  * @since 3.4.0
@@ -925,7 +925,7 @@
 	if ( '' === $color )
 		return '';
 
-	// 3 or 6 hex digits, or the empty string.
+	// 3 or 6 hex characters, or the empty string.
 	if ( preg_match('|^#([A-Fa-f0-9]{3}){1,2}$|', $color ) )
 		return $color;
 
@@ -939,7 +939,7 @@
  * UI, which makes it difficult to use or upgrade to other color types such as
  * rgba, hsl, rgb, and html color names.
  *
- * Returns either '', a 3 or 6 digit hex color (without a #), or null.
+ * Returns either '', a 3 or 6 character hex color (without a #), or null.
  *
  * @since 3.4.0
  */